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Last Updated
22 Feb 2019
Minimum Order
Ph Meter

Specification of HI90302

Precision titrant delivery system

  • 40,000 step, piston dosing pump
  • Accurate to 0.1%
  • Delivers as little as 0.125 µL of titrant
  • Precision ground, 5 mL glass burette with PTFE plunger, PTFE burette tubing, and polyurethane tube jacketing (thermally insulating, light blocking)
  • Glass anti-diffusion dispensing tip
  • Clip-Lock™ exchangeable burette system enables users to exchange reagent burettes in a matter of seconds


Sealed solvent system

  • Change to fresh solvent in a matter of seconds without opening the titration vessel
  • Minimises exposure to ambient humidity, reducing titrant consumption and saving time
  • PTFE solvent tubing is resistant to harsh KF solvents and titrants


Beaker top

  • Chemically-resistant reaction vessel cap and fittings
  • Quick-remove sample port plug with replaceable silicone rubber septum


Anti-diffusion burette tip

  • Delivers titrant in high turbulence zone, ensuring rapid reaction
  • Prevents unwanted diffusion of titrant


Built-in stirrer

  • Automatic, integrated magnetic stirrer adjustable from 200-2000 RPM
  • Optical feedback for automatic speed control
  • Optional external stirrer available


Rechargeable indicating desiccant

  • Prevents the ingress of ambient humidity into the sealed solvent system while maintaining full titrator functionality
  • Minimises changes to titrant titre
  • Indicates when adsorption capacity is depleted
  • Regenerates at 150°C


PTFE bottle cap

  • Caps fit any GL45-threaded bottle
  • Chemically resistant caps and fittings
  • Removable desiccant cartridges


Range <100 ppm to 100%
Resolution 1 ppm (0.0001%)
Result Units %, ppm, mg/g, µg/g, mg, µg, mg/mL, µg/mL, mg/pc, µg/pc
Sample Type liquid or solid
 Pre-Titration Conditioning automatic
 Background Drift Correction automatic or user selectable value
 Endpoint Criteria fixed mV persistence, relative drift stop or absolute drift stop
 Dosing dynamic with optional pre-dispensing rate
 Result Statistic mean, standard deviation
Clip Lock™:  
 Dosing Pump Resolution 1/40000 of the burette volume (0.125 µL per dose)
 Dosing Pump Accuracy ±0.1% of full burette volume
 Syringe 5 mL precision ground glass with PTFE plunger
 Valve motor driven 3-way, PTFE liquid contact material
 Tubing PTFE with light block and thermal jacketing
 Dispensing Tip glass, fixed position, anti-diffusing
 Titration Vessel conical with operation volume between 50-150 mL
 Solvent Handling System sealed system, integrated diaphragm air pump
 Type dual platinum pin, polarisation electrode
 Connection BNC
 Polarisation Current 1, 2, 5, 10, 15, 20, 30 or 40 µA
 Voltage Range 2 mV to 1000 mV
 Voltage Resolution 0.1 mV
 Accuracy (@25ºC/77ºF) ±0.1%
External Stirrer:  
 Type magnetic, optically regulated, digital stirrer
 Speed 200-2000 rpm
 Resolution 100 rpm
Peripheral Devices:  
 PC easily view, transfer, print or delete methods and reports via HI-900PC application
 USB Flash Drive easily upgrade software or transfer methods and reports between devices using a USB drive
 Laboratory Analytical Balance RS232 to connect any laboratory balance
 Printer print directly from the HI 903 to a printer via parallel port
 Monitor instrument status and titrations can be viewed on a larger screen using any VGA compatible external monitor
 Keyboard alphanumeric text can be entered using an optional PS/2 keyboard
Graphic Display 5.7” (320 x 240 pixel) color LCD
Titration Methods up to 100 (standard and user) methods
Data Storage up to 100 complete titration reports and drift rate reports can be stored
GLP Conformity Good Laboratory Practice and instrument data storage and printing
Languages English, Portuguese and Spanish
Enclosure Material ABS plastic and steel
Keypad polycarbonate
Power Supply “-02” model: 230VAC, 50/60 Hz;
Operating Environment 10 to 40ºC, up to 95% RH
Storage Environment -20 to 70ºC, up to 95% RH
Dimensions 390 x 350 x 380 mm (15.3 x 13.8 x 14.9”)
Weight approximately 10 kg (22 lbs.)

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